Calendar

Add to Calendar 1/26/2018 12:00 pm 1/26/2018 America/Chicago High Energy/Medium Energy Physics Seminar: "An effective field theory approach to neutrinoless double beta decay" DESCRIPTION:

Neutrinoless double-beta decay experiments probe  the nature of neutrino masses and the conservation of lepton number.
A discovery in the next generation of experiments will have profound implications: it will demonstrate that neutrinos are Majorana fermions, shed light on the mechanism of neutrino mass generation, and give insight on leptogenesis scenarios for the generation of the matter-antimatter asymmetry in the universe. By itself, however, the observation of neutrinoless double-beta decay  will not immediately point to the underlying physical origin of lepton number violation (LNV). In this talk I will discuss LNV in the framework of effective field theories. After introducing LNV interactions at the electroweak scale, I will discuss their possible manifestations at colliders.  I will then match these interactions  onto LNV operators at low-energy, going beyond a neutrino Majorana mass. I will derive the operators that mediate double-beta decay in chiral effective theory, for light Majorana neutrino exchange and higher-dimensional LNV operators, discuss the existing constraints on LNV interactions, and the implications for the interpretation of a signal (or lack of thereof) in the next generation of double-beta experiments.   

\n\nSPEAKER:

Dr. Emanuele Mereghetti, Los Alamos National Laboratory

464 Loomis

false

High Energy/Medium Energy Physics Seminar: "An effective field theory approach to neutrinoless double beta decay"

Speaker Dr. Emanuele Mereghetti, Los Alamos National Laboratory
Date: 1/26/2018
Time: 12 p.m.
Location:

464 Loomis

Event Contact: Marjorie Gamel
217-333-3762
mgamel@illinois.edu
Sponsor:

Department of Physics

Event Type: Seminar/Symposium
 

Neutrinoless double-beta decay experiments probe  the nature of neutrino masses and the conservation of lepton number.
A discovery in the next generation of experiments will have profound implications: it will demonstrate that neutrinos are Majorana fermions, shed light on the mechanism of neutrino mass generation, and give insight on leptogenesis scenarios for the generation of the matter-antimatter asymmetry in the universe. By itself, however, the observation of neutrinoless double-beta decay  will not immediately point to the underlying physical origin of lepton number violation (LNV). In this talk I will discuss LNV in the framework of effective field theories. After introducing LNV interactions at the electroweak scale, I will discuss their possible manifestations at colliders.  I will then match these interactions  onto LNV operators at low-energy, going beyond a neutrino Majorana mass. I will derive the operators that mediate double-beta decay in chiral effective theory, for light Majorana neutrino exchange and higher-dimensional LNV operators, discuss the existing constraints on LNV interactions, and the implications for the interpretation of a signal (or lack of thereof) in the next generation of double-beta experiments.   

To request disability-related accommodations for this event, please contact the person listed above, or the unit hosting the event.

Event Mailing List

Receive Physics Illinois events weekly in your inbox.

Sign-up!


Remove me!